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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Spermatophore implantation in Rossia moelleri Steenstrup, 1856 (Sepiolidae; Cephalopoda)
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Spermatophore implantation in Rossia moelleri Steenstrup, 1856 (Sepiolidae; Cephalopoda)

机译：1856年，Rossia moelleri Steenstrup的精子植入术（Se科；头足纲）

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摘要

The small sepiolid cephalopod Rossia moelleri Steenstrup, 1856 transfers sperm by implantation of spermatangia into female tissue. Although this is a common sperm transfer and storage strategy in cephalopods, the mechanism behind implantation of spermatangia is poorly understood. In the lab, we artificially induced the spermatophoric reaction and spermatangia implanted into female tissue. The force necessary to penetrate the mantle was measured using a needle attached to a force transducer. Taking diameter and bluntness factor into account, this force was estimated to be 0.3 N. Analysis of the spermatophoric reaction showed that the maximum force (1.12 μN-9.36 μN) produced as a result of acceleration (1.57-3.59 mm/s~2) of the forward moving sperm mass (2.6-7 mg) was insufficient to be solely responsible for the penetration of the spermatangia into tissue. Scanning electron microscopy revealed no structures that could have facilitated the implantation of the spermatangium. Histological sections of the implanted spermatangium visualized the cement body being orally secreted from the spermatangium, probably facilitating the implantation either by lysis of the surrounding tissue or by acting as a lubricant during implantation. This study shows that the autonomous implantation process of spermatangia of R. moelleri does not have a purely mechanical basis but necessitates an additional, probably chemical mechanism or a combination of these two.
机译：1856年，小头足类头足类罗氏菌（Rossia moelleri Steenstrup）通过将精子症植入女性组织来转移精子。尽管这是头足类动物中常见的精子转移和储存策略，但对精子植入的机制仍知之甚少。在实验室中，我们人工诱导了精原细胞反应和将精子症植入女性组织。使用连接到力传感器的针头测量穿透地幔所需的力。考虑到直径和钝度因素，该力估计为0.3N。对精子生发反应的分析显示，加速度（1.57-3.59 mm / s〜2）产生了最大力（1.12μN-9.36μN）。向前移动的精子质量（2.6-7 mg）不足以单方面负责精子囊向组织的渗透。扫描电子显微镜显示没有可以促进精子植入的结构。植入的精子的组织学切片显示出从精子中经口分泌的水泥体，可能通过周围组织的溶解或在植入过程中充当润滑剂来促进植入。这项研究表明，莫勒氏酵母精子的自主植入过程没有纯粹的机械基础，但是需要附加的，可能的化学机理或这两者的组合。

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